All Outputs (111)

A study of wireless sensor network architectures and projects for traffic light monitoring (2012)
Presentation / Conference Contribution

Vehicular traffic is increasing around the world, especially in urban areas. This increase results in a huge traffic congestion, which has dramatic consequences on economy, human health, and environment. Traditional methods used for traffic managemen... Read More about A study of wireless sensor network architectures and projects for traffic light monitoring.

Slotted contention-based energy-efficient MAC protocols in delay-sensitive wireless sensor networks (2012)
Presentation / Conference Contribution

This paper considers slotted duty-cycled medium access control (MAC) protocols, where sensor nodes periodically and synchronously alternate their operations between active and sleep modes to save energy. Communications can occur only when nodes are i... Read More about Slotted contention-based energy-efficient MAC protocols in delay-sensitive wireless sensor networks.

Survey on latency issues of asynchronous MAC protocols in delay-sensitive wireless sensor networks (2012)
Journal Article

Energy-efficiency is the main concern in most Wireless Sensor Network (WSN) applications. For this purpose, current WSN MAC (Medium Access Control) protocols use duty-cycling schemes, where they consciously switch a node's radio between active and sl... Read More about Survey on latency issues of asynchronous MAC protocols in delay-sensitive wireless sensor networks.

R^{4}Syn: Relative referenceless receiver/receiver time synchronization in wireless sensor networks (2012)
Journal Article

A new time synchronization protocol for wireless sensor networks (WSN) is proposed. It uses the receiver-to-receiver principle introduced by the Reference Broadcast Synchronization (RBS), which reduces the time-critical path compared to the sender-to... Read More about R^{4}Syn: Relative referenceless receiver/receiver time synchronization in wireless sensor networks.

Estimators for RBS-based time synchronization in heterogeneous wireless networks (2011)
Presentation / Conference Contribution

A general scenario for using reference broadcast synchronization (RBS) in heterogeneous multi-hop wireless networks is defined, together with an appropriate model allowing to directly derive maximum likelihood estimators (MLE) to the skew and offset... Read More about Estimators for RBS-based time synchronization in heterogeneous wireless networks.

Self-repairing clusters for time-efficient and scalable actor-fault-tolerance in wireless sensor and actor networks (2011)
Presentation / Conference Contribution

A new solution for fault-tolerance in wireless sensor and actor networks (WSAN) is proposed. The solution deals with fault-tolerance of actors, contrary to most of the literature that only considers sensors. It considers real-time communication, and... Read More about Self-repairing clusters for time-efficient and scalable actor-fault-tolerance in wireless sensor and actor networks.

Distributed receiver/receiver synchronization in wireless sensor networks: New solution and joint offset/skew estimators for Gaussian delays (2011)
Presentation / Conference Contribution

This paper proposes a new synchronization protocol for wireless sensor networks (WSN). The proposed protocols is based on the receive/reieve approach, which was introduced by the Reference Broadcast Synchronization (RBS). This approach has been chose... Read More about Distributed receiver/receiver synchronization in wireless sensor networks: New solution and joint offset/skew estimators for Gaussian delays.

Traffic-differentiation-based modular QoS localized routing for wireless sensor networks (2010)
Journal Article

A new localized quality of service (QoS) routing protocol for wireless sensor networks (WSN) is proposed in this paper. The proposed protocol targets WSN's applications having different types of data traffic. It is based on differentiating QoS requir... Read More about Traffic-differentiation-based modular QoS localized routing for wireless sensor networks.

A gradual solution to detect selfish nodes in mobile ad hoc networks (2010)
Journal Article

The resource limitation of nodes forming ad hoc networks along with the multi-hop nature of these networks rise a new problem. To preserve its energy a node may behave selfishly and would not forward packets for others, while using their services and... Read More about A gradual solution to detect selfish nodes in mobile ad hoc networks.

Power-aware QoS geographical routing for wireless sensor networks - Implementation using Contiki (2010)
Presentation / Conference Contribution

This paper presents the design and implementation of a new geographical quality of service (QoS) routing for wireless sensor networks. The protocol is based on traffic differentiation and provides customized QoS according to the traffic requirement.... Read More about Power-aware QoS geographical routing for wireless sensor networks - Implementation using Contiki.

New QoS and geographical routing in wireless biomedical sensor networks (2009)
Presentation / Conference Contribution

In this paper we deal with biomedical applications of wireless sensor networks, and propose a new quality of service (QoS) routing protocol. The protocol design relies on traffic diversity of these applications and ensures a differentiation routing u... Read More about New QoS and geographical routing in wireless biomedical sensor networks.

LOCALMOR: Localized multi-objective routing for wireless sensor networks (2009)
Presentation / Conference Contribution

This paper proposes a multi-objective quality of service (QoS) routing protocol for wireless sensor networks (WSN). The protocol takes into account the traffic diversity typical for many applications and provides a differentiation in routing using Qo... Read More about LOCALMOR: Localized multi-objective routing for wireless sensor networks.

Brief announcement on MOGRIBA: Multi-objective geographical routing for biomedical applications of WSN (2009)
Presentation / Conference Contribution

A new routing protocol for wireless sensor networks is proposed in this paper. The proposed protocol focuses on medical applications, by considering its traffic diversity and providing a differentiation routing using quality of service (QoS) metrics.... Read More about Brief announcement on MOGRIBA: Multi-objective geographical routing for biomedical applications of WSN.

CoP4V: Context-based protocol for vehicle's safety in highways using wireless sensor networks (2009)
Presentation / Conference Contribution

Safety is evergreen vital criteria for road traffic. We propose an infrastructureless solution based on contexts to increase safety of vehicle. Contexts characterize and track the moving environment of a vehicle. Here, environment means the vehicle's... Read More about CoP4V: Context-based protocol for vehicle's safety in highways using wireless sensor networks.

Towards immunizing MANET's source routing protocols against packet droppers (2009)
Journal Article

This paper deals with security of routing protocols of Mobile Ad hoc Networks (MANETs), and proposes a solution to immunize such protocols against packet dropping misbehavior. Most of the current secure protocols are vulnerable to packet dropping mis... Read More about Towards immunizing MANET's source routing protocols against packet droppers.

On eliminating packet droppers in MANET: A modular solution (2008)
Journal Article

In this paper we deal with misbehaving nodes in mobile ad hoc networks (MANETs) that drop packets supposed to be relayed, whose purpose may be either saving their resources or launching a DoS attack. We propose a new solution to monitor, detect, and... Read More about On eliminating packet droppers in MANET: A modular solution.

Preventing vehicle crashes through a wireless vehicular sensor network (2008)
Presentation / Conference Contribution

In this manuscript we propose a wireless sensor network (WSN) based solution allowing vehicles with merely onboard sensors to avoid frontal collisions in rural highways. Unlike the current solutions that rely on heavy infrastructure, in our vehicular... Read More about Preventing vehicle crashes through a wireless vehicular sensor network.

VANET's mobility models and overtaking: An overview (2008)
Presentation / Conference Contribution

The most important feature of Vehicular Ad hoc Networks (VANETs) is the high mobility of nodes, which makes the mobility model one of the most important parameters that should be carefully selected when evaluating any protocol. To correctly and faith... Read More about VANET's mobility models and overtaking: An overview.

Selfish behavior on packet forwarding: An emergent security problem in MANET (2008)
Book Chapter

The limitation in energy resources along with the multi-hop nature of mobile ad hoc networks cause a new vulnerability, that does not exist in traditional networks. To preserve its own battery, anode may behave selfishly and would not forward packets... Read More about Selfish behavior on packet forwarding: An emergent security problem in MANET.

Simulation of mobility models in vehicular ad hoc networks (2008)
Presentation / Conference Contribution

Copyright ACM 2007. One of the emerging applications that belongs to ambient systems is to transparently and directly interconnect vehicles in roads, making an ad hoc network that enables a variety of applications through distritbuted softwares witho... Read More about Simulation of mobility models in vehicular ad hoc networks.